Computer Hardware
You run a super wing-ding diagnostic program on your PC, and it reports that your hard drive, microprocessor, RAM, and video card have seen better days. To resolve this problem you should:

run an exhaustive memory check
replace everything at once and rerun the diagnostic
replace each part one at a time, rerunning the diagnostic before replacing the next part.
get another copy of the diagnostic program
check to see if you have a software problem

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Computer Hardware
Whenever you have a hardware resource conflict, it will more likely be an IRQ conflict rather than an i/o conflict because:

the BIOS sometimes has more of a problem controlling IRQs
software tends to correct I/O conflicts
I/O addresses cannot conflict
software tends to mess up IRQs
there are a lot more I/O addresses than IRQs.

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